Record accuracy of expected queueing time metric.

ui/latency/latency_info.cc

Index: ui/latency/latency_info.cc
diff --git a/ui/latency/latency_info.cc b/ui/latency/latency_info.cc
index 9427c4ccc308e9eaa71f9a60b5b5df36b69c1cd6..b7df0c5355e819c8ab25c54e0729ed86f8deb503 100644
--- a/ui/latency/latency_info.cc
+++ b/ui/latency/latency_info.cc
@@ -171,6 +171,9 @@ void LatencyInfo::CopyLatencyFrom(const LatencyInfo& other,
                                     lc.second.event_count);
     }
   }
+
+  expected_queueing_time_on_dispatch_ =
+      other.expected_queueing_time_on_dispatch_;
 }
 
 void LatencyInfo::AddNewLatencyFrom(const LatencyInfo& other) {
@@ -183,6 +186,9 @@ void LatencyInfo::AddNewLatencyFrom(const LatencyInfo& other) {
                                     lc.second.event_count);
     }
   }
+
+  expected_queueing_time_on_dispatch_ =
+      other.expected_queueing_time_on_dispatch_;
 }
 
 void LatencyInfo::AddLatencyNumber(LatencyComponentType component,